Hi-o from Ohio XD

[dr.ducttape]

hello, my name is harley and i just bought a truck from a friend, an 88' GMC 3/4 ton pick up. i would like to get this thing running better then what he had it. I had just took it out for a ride when i got it and parked it for the work week, i went out to start it and the shift linkage wont engage from park, it is stuck. I tinker around and wanted to buy a truck to play with and see if i have the know how to fix it. this is the problem so far that stumps me. Please if you have any idea what is wrong please let me know.

Thanks in advance